Geologists Have an Interest in the Structure and the History

question 63

Multiple Choice

Geologists have an interest in the structure and the history of the earth.A geologist can go back in time by drilling deep into the ground,retrieving a core sample,estimating the ages of the various layers,and examining the composition.A timeline can be built of the entire area from where the core sample was drilled.A geologist may retrieve several core samples to confirm the history of the earth's structure in that sampled area.Mountains,lakes,and unstable ground can easily impede a simple random sampling of a desired geographical area,therefore what is the most realistic sampling method that represents the actual drillings,comparisons,and scientific examinations of several core samples within the same geographical area?

• A)Convenience sampling
• B)Cluster sampling
• C)Stratified sampling
• D)Systematic sampling
• E)Multistage sampling

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Definitions:

Inheritance

A fundamental concept in object-oriented programming, allowing a class (subclass) to inherit properties and methods from another class (superclass), promoting reusability.

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In Java, exceptions that are checked at compile time, requiring explicit handling either with a try-catch block or by declaring the exception with the throws keyword.

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A principle in Java programming requiring that exceptions be either caught and handled using a catch block, or declared in the method's signature.

Catch Block

A block of code used to handle exceptions that may occur in a preceding try block.